# SDR DALA2017013101662

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2015
- Submitted: March 1, 2017
- Operation: Air carrier
- Aircraft: [N594NW](https://openairdocs.org/aircraft/N594NW), registered now
- Make and model: Boeing 757351
- Aircraft serial: 32994
- Aircraft time: 48,652 hours, 16,294 cycles
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Ballscrew
- Condition: Corroded
- Location: Te Flap
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017013101662

## Discrepancy

LT NR 4 FLAP TRACK POSITION, BALLNUT ASSY INSIDE TRUNNION HAS CORROSION. REF T/C. CORRECTIVE ACTION: REMOVED AND INSTALLED BALLSCREW ASSY IAW AMM.

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